JPH074563A - Temperature-sensitive three-way line valve with shape memory alloy made actuator - Google Patents

Temperature-sensitive three-way line valve with shape memory alloy made actuator

Info

Publication number
JPH074563A
JPH074563A JP2963794A JP2963794A JPH074563A JP H074563 A JPH074563 A JP H074563A JP 2963794 A JP2963794 A JP 2963794A JP 2963794 A JP2963794 A JP 2963794A JP H074563 A JPH074563 A JP H074563A
Authority
JP
Japan
Prior art keywords
valve
limit
compression spring
temperature
way line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2963794A
Other languages
Japanese (ja)
Inventor
James M Bell
Richard L Martin
Colin A Mcgugan
Maier Perlman
エー.マクガギャン コリン
エム.ベル ジェームス
パールマン メイヤー
エル.マーティン リチャード
Original Assignee
James M Bell
Richard L Martin
Colin A Mcgugan
Maier Perlman
エー.マクガギャン コリン
エム.ベル ジェームス
パールマン メイヤー
エル.マーティン リチャード
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US08/026,032 priority Critical patent/US5261597A/en
Priority to US08/026,032 priority
Application filed by James M Bell, Richard L Martin, Colin A Mcgugan, Maier Perlman, エー.マクガギャン コリン, エム.ベル ジェームス, パールマン メイヤー, エル.マーティン リチャード filed Critical James M Bell
Publication of JPH074563A publication Critical patent/JPH074563A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00Control of temperature
    • G05D23/01Control of temperature without auxiliary power
    • G05D23/13Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures
    • G05D23/1306Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids
    • G05D23/132Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids with temperature sensing element
    • G05D23/1333Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids with temperature sensing element measuring the temperature of incoming fluid

Abstract

(57) [Summary] [Purpose] To provide a self-contained three-way line valve with automatic warming. [Structure] The fluid flows from the inflow hole (12) to the first outflow hole (1
3) or a tubular valve member (18) axially slidably mounted between a first limit position and a second limit position for the purpose of selectively flowing into the second outlet hole (14). ing. Further, the valve member (18) is disposed between a pair of compression springs (29, 30) facing each other, one spring (29) being conventional and the valve member (18) Press to the limit position and press another spring (3
No. 0) is made of SME alloy, and when the fluid temperature exceeds a predetermined temperature, the elastic force of the spring (29) can be resisted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature sensitive three-way line valve, and more particularly to a valve which is usually used in a fluid supply line and which selectively causes the fluid to flow to one or the other of two outflow holes depending on the fluid temperature. .

[0002]

2. Description of the Related Art In a system in which a fluid is supplied at a controlled temperature, a three-way line valve is used to flow the fluid to a heat exchanger or other device when the fluid temperature is different from the temperature. It is possible to For example,
If the temperature is within the predetermined range, the fluid is directly supplied to the place of use. However, if the fluid temperature becomes too high, it is cooled by flowing it through a heat exchanger using the valve described above. On the other hand, when the fluid temperature is too low, the valve is used to cause the fluid to flow to the heater.

[0003]

However, in the conventional system as described above, an electric or pneumatic valve controlled by a separate temperature sensor is used. Such a valve is not a built-in type, but when it is attempted to control the valve, it depends on an external device and an external power source.

Therefore, an object of the present invention is to provide a temperature-sensitive three-way line valve which is of a built-in type, operates quickly, and can be automatically operated without relying on an external power source.

[0005]

The valve of the present invention comprises a tubular valve body defining an internal chamber. The valve body has an inflow hole and first and second outflow holes, and the outflow hole is adapted for selective communication with the inflow hole by a tubular valve member. The tubular valve member is slidably mounted in the valve body and is axially movable between a first limit position and a second limit position. The valve member closes the communication between the inflow hole and the second outflow hole when in the first limit position, and closes the communication between the inflow hole and the first outflow hole when in the second limit position. Has become. Further, the valve member is arranged between two springs facing each other,
One spring is made of SME (shape memory) alloy, and when the alloy is in the martensite phase, its rigidity cannot oppose the opposing spring and the valve member is stopped at the first limit position, but the alloy In the case of the austenite phase, the elastic force of the counterpart spring can be opposed so as to press the valve member to the second limit position.

[0006]

According to the present invention, since the state of the alloy changes from the martensite phase to the austenite phase or vice versa, after the fluid reaches a predetermined temperature, the valve member automatically moves between both limit positions. You will be able to switch to.

[0007]

In order to better understand the present invention, one embodiment will be described below with reference to the drawings. Please refer to FIG. The valve of the present invention comprises a tubular valve body 10 forming an internal chamber 11, which valve body has an inflow hole 12 at one end and a first outflow hole 13 at the other end.
And a second outflow hole 14 that communicates with the inner chamber 11 between the inflow hole 12 and the first outflow hole 13. Adapters 15a, 15b, 1 for connecting tubes or pipes
5c uses nuts 16a, 16b, 16c with screws and is in contact with the valve body 10 at the positions of the holes 12, 13, 14. Sealing material 1 fitted in each mating groove
7a, 17b, 17c are provided in the inflow hole and the two outflow holes to prevent fluid leakage to the outside.

A tubular valve member or shuttle member 18
Is slidably mounted on the bore portion of the valve body 10 and is capable of reciprocating movement in the axial direction between the first limit position and the second limit position. The first limit position is shown in the upper half of FIG. 1 and the second limit position is shown in the lower half of FIG. The valve member 18 has an annular step portion 19
Forming a cylindrical wall portion having
When 8 is in the first limit position, the annular step portion 19 engages the inner edge 20 of the valve body and limits the first limit position.

The spider assembly 21 is arranged inside the valve body 10 on the downstream side of the valve member 18. The spider assembly 21 includes a support member having a non-perforated central portion 22 and a perforated outer peripheral portion 23. The outer periphery 23 further includes slots 24 (shown in FIG. 3) to allow fluid to flow from the valve chamber 11 to the first outflow hole 13.
Is being formed. As shown in the lower half of FIG. 1, the second limit position of the valve member 18 is the outer peripheral edge of the central portion 22 of the spider assembly that is aligned with and engageable with the downstream edge of the valve member. Limited by part 25. The holding plate or holding member 26 is mounted coaxially with the central portion 22 of the spider support member by an adjusting screw 27 having a lock nut 28.

The valve member 18 is arranged between a pair of helical coil compression springs 29 and 30 facing each other. The first compression spring 29 is a conventional one,
One end is supported and pressed by the holding member 26. The other end of the spring contacts the internal step 31 of the tubular valve member 18 and pushes the valve member to the first limit position as shown in the upper half of FIG. As can be seen in FIG. 1, the valve member 18 closes the communication between the inflow hole 12 and the second outflow hole 14 when in the first limit position, but fluid flows from the inflow hole 12 into the tubular valve member 18 and the slot. Two
It is possible to flow to the first outflow hole 13 via 4.

The second compression spring 30 is an SME (shape memory).
It is made of an alloy, and is in the martensite phase in the cold state, but when it is heated to a predetermined temperature, it changes to the austenite phase depending on the composition of the alloy and its working state. The alloy exhibits a low elastic modulus when in the martensitic phase, but a high elastic modulus when in the austenitic phase. Therefore, when the compression spring 30 is at a temperature lower than the transition temperature, it is preferable to set the rigidity of the first compression spring 29 to be larger than the rigidity of the compression spring 30.
Conversely, when the compression spring 30 is at a temperature higher than the transition temperature, it is preferable to set the rigidity of the first compression spring 29 to be smaller than the rigidity of the compression spring 30.

In operation, when the fluid flowing through the valve is at a temperature below a predetermined or transition temperature, the valve member 18 is in the first limit position, the "cold state" shown in the upper half of FIG. Position "and is positioned by engagement of the annular step portion 19 of the valve member and the inner edge 20 of the valve body. The fluid flows in through the inflow hole 12, passes through the compression spring 30, the inside of the valve member 18, the open coil portion of the compression spring 29, and the slot 24 of the spider assembly and flows into the first outflow hole 13. At this time, the second outflow hole 14 is in a closed state.

After the fluid has been heated to a predetermined temperature, the compression spring 30 becomes more rigid, so that the spring 29 becomes the spring 30.
1 is no longer able to counteract the elastic force of the valve, so that the valve member quickly moves to the second limit position shown in the lower half of FIG. In the second limit position, the fluid flows in through the inflow hole, passes through the slot 34 at one end of the valve member, and flows into the second outflow hole 14.

The degree of switching movement of the valve member 18 between the two limit positions can be adjusted by the adjusting screw 27, whereby the elastic deformation caused by the first compression spring 29 can be adjusted. .

[0015]

According to the present invention, the state of the alloy changes from the martensite phase to the austenite phase or vice versa, so that after the fluid reaches a predetermined temperature, the valve member is moved between both limit positions. You will be able to switch automatically. Further, as can be seen from the above description, the SME alloy spring 30 is arranged in the axial bore of the valve body 10,
It is retained on an inwardly directed flange 32 within the valve body. The upstream end of the SME alloy spring 30 is supported by the pad 33 provided on the flange 32, and the SM
The E alloy spring 30 is insulated from the valve body. One of the important features of the valve of the present invention is that the SME alloy spring is in the shape of a helical coil and the inlet hole 1
Since it is arranged in the axial bore adjacent to 2, it is possible to generate turbulence in the inflowing fluid and promote heat transfer between the fluid and the spring.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a temperature-sensing three-way line valve according to the present invention, which is horizontally divided along the axial direction of the valve to show the valve member in each limit position.

FIG. 2 is an end view of the valve member taken along line 2-2 of FIG.

3 is an end view of the spider assembly taken along line 3-3 of FIG.

[Explanation of symbols]

 10 valve body 11 internal chamber 12 inflow hole 13 first outflow hole 14 second outflow hole 18 valve member 21 spider assembly 22 spider assembly central part 23 spider assembly outer peripheral part 24 spider assembly slot 27 adjusting screw 29 first compression Spring 30 Second compression spring 34 Slot

Continued Front Page (71) Applicant 594035769 Richard El. Martin Richard L. Martin USA Connecticut 06488, Southbury, Kettletown Woods Road 72 (71) Applicant 594035770 Colin A .. McGagan Colin A. McGugan Canada, L4wai 1B1, Ontario, Mississauga, Ribstone Road 866 (72) Inventor Mayer Pearlman Canada, L4J 3B6, Ontario, Thornhill, York Hill BELBUDDY 344 (72) Inventor James M. Bell Canada, L5 H3 C6, Ontario, Mississauga, Albertson Crescent 1049 (72) Inventor Richard El. Martin United States, Connecticut 06488, Southbury, Kettletown Woods Road 72 (72) Inventor Colin A .. McGagyan Canada, El 4wai 1 Bee 1, Ontario, Mississauga, Ribstone Road 866

Claims (8)

[Claims]
1. A temperature sensitive three-way line valve, which forms an internal chamber (11) and communicates with the internal chamber, and further comprises first and second outflow holes (13, 14).
A tubular valve body (10) having an inflow hole (12) in communication with the valve body, and slidably mounted within the valve body (10) and between a first limit position and a second limit position. Is configured to be movable in a direction, closes the communication between the inflow hole (12) and the second outflow hole (14) when in the first limit position, and closes the inflow hole (12) when in the second limit position. First outflow hole (1
3) A tubular valve member (18) provided so as to close communication with the first compression spring (29) for pressing the valve member (18) to a first limit position, and the first compression spring. A second compression spring (3) that opposes and presses the valve member (18) to the second limit position.
0), the second compression spring (30) is made of an SME (shape memory) alloy, and the valve member (18) is held in the first limit position when the alloy is in the martensite phase. As described above, the first compression spring (29) has a rigidity that cannot oppose the elastic force of the first compression spring (29), and when the alloy is in the austenite phase, presses the valve member (18) to the second limit position. A temperature-sensitive three-way line valve having a rigidity that can withstand the elastic force of (29).
2. The temperature-sensing three-way line valve according to claim 1, wherein the second compression spring (30) is arranged adjacent to the inflow hole (12).
3. The second compression spring (30) is a helical coil spring arranged to cause turbulence in the fluid flowing into the inflow hole (12). The temperature-sensitive three-way line valve described in 2.
4. The valve body (10) has an inward retaining flange (32), and an insulating pad (33) pressed against one end of the second compression spring (30) has a flange (3).
2) so that the second compression spring (3
The heat-sensitive three-way line valve according to claim 3, wherein heat transfer between the valve body (0) and the valve body (10) is reduced to a minimum.
5. A temperature-sensing three-way line valve comprising an internal chamber (11), an inflow hole (12) at one end, and a first outflow hole (13) at the other end. The inflow hole (12) and the first outflow hole (13) are axially aligned, and the second outflow hole (14) is inflow hole (1
A tubular valve body (10) configured to communicate with the internal chamber (11) between 2) and the first outflow hole (13), and slidably mounted in the valve body (10), It is configured to be movable in the axial direction between the limit position and the second limit position, and when in the first limit position, the communication between the inflow hole (12) and the second outflow hole (14) is closed, and When in the limit position, the inflow hole (12) and the first outflow hole (1
3) A tubular valve member (18) provided so as to close communication with the valve body, and the valve body (10) is provided at one end of the valve member (18) so as to limit a first limit position of the valve member (18). Adjacently has an internal adjoining means (20) engageable with the valve member, further provided in the valve body (10) so as to limit the second limit position of the valve member (18), A spider assembly (21) engageable with the other end of the valve member, a first compression spring (29) for pressing the valve member (18) to a first limit position, and a first compression spring facing the first compression spring. A second compression spring (3) for pressing the valve member (18) to the second limit position.
0), the second compression spring (30) is made of an SME (shape memory) alloy, and the valve member (18) is held in the first limit position when the alloy is in the martensite phase. As described above, the first compression spring (29) has a rigidity that cannot oppose the elastic force of the first compression spring (29), and when the alloy is in the austenite phase, presses the valve member (18) to the second limit position. A temperature-sensitive three-way line valve having a rigidity that can withstand the elastic force of (29).
6. The valve body (10) has an inner retaining flange (32), and the flange (32) is provided with a heat insulating pad (33) pressed against one end of the second compression spring (30). The temperature-sensing three-way line valve according to claim 5, wherein heat transfer between the second compression spring (30) and the valve body (10) is reduced to a minimum.
7. The spider assembly (21) has a non-perforated central portion (22) and a perforated outer peripheral portion (23) to define a flow passage communicating with the first outflow hole (13). It comprises a spider support member and a holding member (26) mounted in the center of the support member, the holding member comprising a first compression spring (2).
9. The end of 9) is supported and the central part is configured to cooperate with one end of the valve member (18) in the second limit position to close the flow passage.
The temperature-sensitive three-way line valve described.
8. The holding member (26) comprises an adjusting means (2).
7) is mounted on the central part (22) of the spider support member by the adjusting means (27).
The temperature-sensitive three-way line valve according to claim 7, wherein the elastic deformation of 9) is adjusted.
JP2963794A 1993-03-04 1994-02-28 Temperature-sensitive three-way line valve with shape memory alloy made actuator Pending JPH074563A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US08/026,032 US5261597A (en) 1993-03-04 1993-03-04 Temperature responsive 3-way line valve with shape memory alloy actuator
US08/026,032 1993-03-04

Publications (1)

Publication Number Publication Date
JPH074563A true JPH074563A (en) 1995-01-10

Family

ID=21829499

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2963794A Pending JPH074563A (en) 1993-03-04 1994-02-28 Temperature-sensitive three-way line valve with shape memory alloy made actuator

Country Status (7)

Country Link
US (1) US5261597A (en)
EP (1) EP0614033B1 (en)
JP (1) JPH074563A (en)
AT (1) AT166143T (en)
AU (1) AU664792B2 (en)
CA (1) CA2107522C (en)
DE (1) DE69410143T2 (en)

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Also Published As

Publication number Publication date
AU5642594A (en) 1994-09-15
AU664792B2 (en) 1995-11-30
CA2107522C (en) 1997-12-30
EP0614033A1 (en) 1994-09-07
AT166143T (en) 1998-05-15
DE69410143T2 (en) 1998-11-12
US5261597A (en) 1993-11-16
EP0614033B1 (en) 1998-05-13
CA2107522A1 (en) 1994-09-05
DE69410143D1 (en) 1998-06-18

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